import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Main from '../components/Main.vue'

Vue.use(VueRouter)

const routes = [
  { path:'/', redirect: '/login'},
  { path:'/login', component:Login},
  { path:'/home', component:Home ,redirect: '/welcome', children:[
    {path:'/welcome',component:Welcome},
    { path:'/main', component:Main, children :[
      {path:'/users',component:Users},
    ]}
  ]}
]

const router = new VueRouter({
  routes
})

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  //to and from are Route Object,next() must be called to resolve the hook}
  if(to.path == '/login') return next();
  if(window.sessionStorage.getItem('token')) return next();
  next('/login')
})

export default router
